Regular Expressions 101

Community Patterns

Community Library Entry

0

Regular Expression
PCRE (PHP <7.3)

/
(?:\s*from\s(?:(?:([^\(\n]*?)\s)|(\[[^\]]*\]))?(?:\((?:(?:((?!HELO|EHLO)[^\s]*)|(?:(?:EHLO)|(?:HELO)))?(?:[\s\w\.]*(?:(?:\[([^\]]*)\])|([^\)\s]*))\))))?(?:\{.*\})?)? \s*(?:(?:client\s)?[\(\{\[]+([^\)\}\]]*)[\)\}\]]+\;?(?:\{.*\})?)? (?:[\s\n]*) (?:\s*(?:by(?:(?:.*?)(?:\;|(?:[\r\n]+))))(?!.*with))? (?:\s*(?:by\s[^\;]*\)?)(?=.*with)\s*)? (?:with\s*(?:((?:[^\n;]*))(?:.*\;)?))? (?:[\s\n]*)? (?:\(?envelope-from\s*([^\n]*)\;?\)?)? (?:\s*id[^;]*\;?)? (?:[\s\n]*)? (?:for\s([^\;]*)\;)? (?:[\s\n]*)? (?:\(.*\)\;)?(?:[\s\n])? ([^\(]+)? (?:\(?envelope-from\s*([^\n]*)\;?\)?)?
/
mx

Description

no description available

Submitted by anonymous - 6 years ago